Generation of entanglement in finite spin systems via adiabatic quantum computation |
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Authors: | S Oh |
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Institution: | 1.Department of Physics,University at Buffalo, The State University of New York,Buffalo,USA |
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Abstract: | For a finite XY chain and a finite two-dimensional Ising lattice, it is shown that the paramagnetic ground state is
adiabatically transformed to the Greenberger-Horne-Zeilinger state in the ferromagnetic phase by changing slowly the external
magnetic field. It is found that the fidelity between the Greenberger-Horne-Zeilinger state and an adiabatically evolved state
depends on
the interpolation schemes as well as the energy gap between the ground and exited states. A possibility whether quantum phase
transitions can be simulated on adiabatic quantum computation is discussed. |
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Keywords: | |
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